Nail-patella syndrome (NPS) is a rare hereditary patellar dysostosis characterized by nail hypoplasia or aplasia, aplastic or hypoplastic patellae, elbow dysplasia, and the presence of iliac horns as well as renal and ocular anomalies.

An acute and life-threatening complication of pregnancy, which is characterized by the appearance of tonic-clonic seizures, usually in a patient who had developed pre-eclampsia. Eclampsia includes seizures and coma that happen during pregnancy but are not due to preexisting or organic brain disorders.